I came across these as I was searching for plantable paper...
www.botanicalpaperworks.com/product/Plantable+Heart+Notes/36/">
http://www.botanicalpaperworks.com/product/Plantable+Heart+Notes/36/what do you think of having them as escort cards doubling as favors?  It says that any ink works so I'd just use a pretty (wedding color) pen to write maybe names on the envelopes and table number on the paper?  What do you think?                
Re: Thoughts as favor/escort card?